Chevy 383 Stroker Rotating Assembly with Clevite bearings for 2 pc rear main seal.
Street / Strip rotating assemblies include the following:
- Scat Pro Stock Series Cast Crankshaft. (balancing required)
- Scat 5.7" 4340 Forged I-Beam rods (bushed) w/ ARP bolts.(see cap screw upgrade below)
- Speed Pro Flat Top Digital Diamond Profiled™ Hypereutectic Coated Skirt Pistons.
- Premium Moly Rings.
- Mahle/ Clevite Rod and Main Bearings.
New Upgrade Available! .100" Dome Pistons or Wiseco Forged Aluminum Pistons.. see below.
Compression ratio by CYL head CC for flattop pistons.
|
Part
number
|
CID
|
58.0cc
|
64.cc
|
68.cc
|
72.cc
|
76.cc
|
|
H860CP
|
377
|
10.98
|
10.27
|
9.84
|
9.45
|
9.10
|
|
H860CP20
|
381
|
11.08
|
10.35
|
9.92
|
9.53
|
9.18
|
|
H860CP30
|
383
|
11.12
|
10.40
|
9.97
|
9.57
|
9.21
|
|
H860CP40
|
385
|
11.17
|
10.44
|
10.01
|
9.61
|
9.25
|
|
H860CP60
|
389
|
11.26
|
10.53
|
10.09
|
9.69
|
9.33
|
Compression ratio by CYL head for Dished Pistons... for use on street performance.
|
Part
number
|
CID
|
58.0cc
|
60.5cc |
64.cc
|
68.cc
|
72.cc
|
76.cc
|
|
H859CP
|
377
|
10.16
|
9.89
|
9.55
|
9.18
|
8.85
|
8.55
|
|
H859CP20
|
381
|
10.24
|
9.98
|
9.63
|
9.26
|
8.93
|
8.62
|
|
H859CP30
|
383
|
10.28
|
10.02
|
9.67
|
9.30
|
8.96
|
8.65
|
|
H859CP40
|
385
|
10.33
|
10.06
|
9.71
|
9.34
|
9.00
|
8.69
|
|
H859CP60
|
389
|
10.41
|
10.14
|
9.79
|
9.42
|
9.08
|
8.76
|
Please check out the upgrades below and don't forget camshafts, lifters and other components!
Note: These kits are not balanced assemblies, balancing is strongly recommended for maximum performance and engine longevity. Also, these Forged I Beam Rods may require clearance work. Check out the upgrade section below for cap screw style Connecting Rods that rarely have issues with clearance. Money well spent!
A quick note about the crankshaft upgrade below.... The aero-winged crankshaft will increase horsepower by reducing windage. It has lightened holes in all rod throws and has straight shot oil holes. Another great product from Scat and Northern Auto Parts!
Photo of optional Dome Pistons that are now available in this kit. Not available in Std bore.
Photo of Wisco Forged Flattop Pistons that are now available in this kit. Not available in Std or .020 bore.
Compression ratio by CYL head CC with piston .005 in the block. This piston is .015 taller than most.
|
size
|
CID
|
58.0cc
|
64.cc
|
68.cc
|
72.cc
|
76.cc
|
|
Standard
|
377
|
n/a
|
n/a
|
n/a
|
n/a
|
n/a
|
|
.020
|
381
|
n/a
|
n/a
|
n/a
|
n/a
|
n/a
|
|
.030
|
383
|
12.00
|
11.15
|
10.65
|
10.19
|
9.50
|
|
.040
|
385
|
12.05
|
11.20
|
10.69
|
10.24
|
9.54
|
|
.060
|
389
|
12.16
|
11.30 |
10.79
|
10.33
|
9.63
|
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